How is the main sequence lifespan of a massive star generally characterized compared to the Sun?
Answer
It is relatively brief, often lasting only a few million years.
Massive stars consume their nuclear fuel rapidly due to intense gravitational pressure, causing them to spend only a few million years on the Main Sequence, which is very brief compared to the Sun's projected 10 billion years.

Related Questions
Where does every star commence its existence?What condition distinguishes a Protostar from a true star?What temperature must the core exceed to begin the Main Sequence stage?How is the main sequence lifespan of a massive star generally characterized compared to the Sun?What element's formation marks the end of the energy-producing fusion chain in a massive star's core?What is the characteristic layered structure observed within a Red Supergiant?What process generates the elements heavier than iron found in the cosmos?What physical event initiates the catastrophic core collapse?If a collapsed core mass remaining after a supernova is between 1.4 and 3 solar masses, what is the resulting remnant?What factor ultimately dictates whether a collapsed core becomes a Neutron Star or a Black Hole?